Citations turn the answer from a claim into something checkable. Each sentence in the answer carries a numbered marker, and that marker points to the exact chunk the sentence was drawn from. A reader can follow the marker back to the source passage and confirm that the answer says what the document says.
How AI Answers Questions About Documents It Never Learned
Grounded Generation: Answering From the Retrieved Text
Following a Citation Back to Its Source
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Those lines back to the chunks are not just a visual aid. In the real system they become numbered markers sitting right after each sentence of the answer.
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